Finding the Third Proportional to 111,402 and 240,370

Step by Step Solution

1. Step 1: Write the proportion equation
   111,402 : 240,370 = 240,370 : x
2. Step 2: Convert to fraction form
   111,402/240,370 = 240,370/x
3. Step 3: Cross multiply
   111,402x = 240,370 × 240,370
4. Step 4: Simplify right side
   111,402x = 57,777,736,900
5. Step 5: Solve for x
   x = 57,777,736,900/111,402
6. Step 6: Final answer
   x = 518,641.83